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Silicon dioxide/poly(styrene-methyl methacrylate) nonspherical composite microspheres and preparation method thereof

A technology of methyl methacrylate and silicon dioxide, applied in the field of silicon dioxide/poly non-spherical composite microspheres and its preparation, can solve the problems of lack of real industrialization, low controllability of shape, cumbersome preparation steps, etc. problems, to achieve the effect of easy control of shape, easy operation and simple process

Inactive Publication Date: 2014-09-03
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the application and research of non-spherical composite microspheres have received extensive attention, which can endow particles with additional properties, such as improving optical properties and adjusting rheological properties of fluids , as a self-assembled unit of biomaterials, used in Pickering emulsifiers, etc.; it has great prospects in academic perspectives and potential applications; however, in the synthesis method of non-spherical composite microspheres, there are currently problems with poor repeatability and shape The disadvantages of low controllability, cumbersome preparation steps and low yield, especially in the preparation of monodisperse polymer microspheres with uniform shape and size, need further research. In addition, its application has not been truly industrialized. Therefore, in the future, not only It is necessary to further study the design of new non-spherical composite microspheres and their preparation methods, and actively expand their industrial applications

Method used

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  • Silicon dioxide/poly(styrene-methyl methacrylate) nonspherical composite microspheres and preparation method thereof
  • Silicon dioxide/poly(styrene-methyl methacrylate) nonspherical composite microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of silica / polystyrene microspheres includes the following raw materials:

[0035] Styrene 14 parts

[0036] 0.5 parts of γ-methacryloxypropyltrimethoxysilane

[0037] Tetraethyl silicate 6 parts

[0038] Hexadecane 0.5 parts

[0039] Potassium persulfate 0.15 parts

[0040] 0.2 parts of divinylbenzene

[0041] Sodium dodecyl diphenyl ether disulfonate 0.2 parts

[0042] 90 parts of water

[0043] Ammonia water 1.5 parts (mass fraction 28%)

[0044] The specific preparation method is as follows:

[0045] Weigh styrene, hexadecane, γ-methacryloxypropyltrimethoxysilane, hexadecane, tetraethyl orthosilicate and divinylbenzene as the oil phase, weigh dodecyldiphenyl Sodium ether disulfonate and potassium persulfate are dissolved in water as the water phase. After the oil phase is stirred and mixed evenly, slowly add to the water phase, pre-emulsify with magnetic stirring at room temperature for 30 minutes, and then finely emulsify with high-speed shear eq...

Embodiment 2

[0051] Preparation of silica / polystyrene microspheres includes the following raw materials:

[0052] Styrene 14 parts

[0053] 0.6 parts of γ-methacryloxypropyltrimethoxysilane

[0054] Tetraethyl silicate 6 parts

[0055] Hexadecane 0.5 parts

[0056] Potassium persulfate 0.15 parts

[0057] 0.2 parts of divinylbenzene

[0058] Sodium dodecyl diphenyl ether disulfonate 0.2 parts

[0059] 90 parts of water

[0060] Ammonia water 1.5 parts (mass fraction 28%)

[0061] The specific preparation method is as follows:

[0062] (with embodiment 1)

[0063] The raw materials and specific preparation methods for preparing silicon dioxide / poly(styrene-methyl methacrylate) non-spherical composite microspheres are as follows

[0064] (with embodiment 1)

Embodiment 3

[0066] Preparation of silica / polystyrene microspheres includes the following raw materials:

[0067] Styrene 14 parts

[0068] 0.5 parts of γ-methacryloxypropyltrimethoxysilane

[0069] Tetraethyl silicate 7 parts

[0070] Hexadecane 0.5 parts

[0071] Potassium persulfate 0.15 parts

[0072] 0.2 parts of divinylbenzene

[0073] Sodium dodecyl diphenyl ether disulfonate 0.2 parts

[0074] 90 parts of water

[0075] Ammonia water 1.5 parts (mass fraction 28%)

[0076] The specific preparation method is as follows:

[0077] (with embodiment 1)

[0078] The raw material and concrete preparation method of preparing silicon dioxide / poly(styrene-methyl methacrylate) non-spherical composite microspheres are as follows:

[0079] (with embodiment 1)

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Abstract

The invention discloses silicon dioxide / poly(styrene-methyl methacrylate) nonspherical composite microspheres and a preparation method thereof. The preparation method is characterized in that silicon dioxide coated polystyrene microspheres are prepared by adopting a bi-insitu miniemulsion method and utilizing the phase separation effect of increasing polystyrene and ethyl orthosilicate, the in-situ hydrolysis of the ethyl orthosilicate and the in-situ polymerization of styrene, and then a second monomer methyl methacrylate is dropwise added so as to prepare the silicon dioxide / poly(styrene-methyl methacrylate) nonspherical composite microspheres. The preparation method provided by the invention is simple in process, easy to operate, mild in reaction conditions and easy to control; the obtained microspheres have good monodispersity; and the corresponding nonspherical structure is controlled by changing the amount of a modifying agent gamma-methacryloxy propyl trimethoxyl silane.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials, and in particular relates to silicon dioxide / poly(styrene-methyl methacrylate) non-spherical composite microspheres and a preparation method thereof. Background technique [0002] Inorganic nanoparticles / polymer microspheres have the dual advantages of inorganic nanoparticles and polymers, and have attracted widespread attention and research in academia and industry. At present, the morphology of composite microspheres is more widely studied, and the impact of morphology on material functions Different morphology can endow microspheres with different properties, so as to meet people's requirements for high performance of materials. Using different formulations and polymerization processes, scholars have obtained inorganic / polymer composite microspheres with special shapes such as "core-shell" structure, "strawberry-shaped" structure, and "petal-shaped" structure. Among them, the research o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F291/06C08F212/08C08F230/08C08F212/36C08F220/14C01B33/12
Inventor 杨建军吴庆云吴明元张建安王云云鲍峰齐才
Owner ANHUI UNIVERSITY